Bug Description

Impact: The "internal speaker" does not show up in the sound settings, which causes this to block certification.

Test case: With the affected machines, open sound settings without headphones plugged in. If the "Internal Speaker" does not show up, the bug is present.

Regression risk (Quantal): Cirrus is a rare codec, mostly used in macbooks. Upstream has reviewed and blessed the patch.

Regression risk (Precise): These machines are quirked individually and won't affect other machines (and even if they did, the worst thing that could happen would be a "speaker" output that shouldn't be there).

This is due to the "Internal Speaker Phantom Jack" kctrl not being created.

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.7 kernel[0] (Not a kernel in the daily directory) and install both the linux-image and linux-image-extra .deb packages.

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

If this package fixes the bug for you, please change the bug tag from verification-needed to verification-done. If it does not, change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

This bug is awaiting verification that the kernel for Quantal in -proposed solves the problem (3.5.0-20.31). Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-quantal' to 'verification-done-quantal'.

If verification is not done by one week from today, this fix will be dropped from the source code, and this bug will be closed.

I have verified it on Quantal, kernel 3.5.0-21.32, but bugs remains, internal speaker interface disappears, but sound actually works.
@kentb: you want me to test with updated pulseaudio under Quantal? The pulseaudio I installed on the system is 2.1-0ubuntu4.

This is probably related - I also found that plugging cable into the HDMI port then unpugging causes internal speakers to go dead. The only way to restore sound output through internal speakers is to plug into headphones port then unplug headphones port - sound then returns to internal speakers.

The verification of this Stable Release Update has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regresssions.